Реферат: Planets And Solar System Essay Research Paper

volcanic activity on Venus takes the form of Basaltic eruptions

that inundate large ares, much as the mare volcanism flooded the

impacted basins on the near side of the moon ” (Morrison, 93,

1993). One thing that differs from Earth is that there is no

water liquid on the Venusian surface.

Some of the scientific data that follows was taken out of

Cattermole’s book. The mean distance from the sun is 108.20 Km.

The equatorial diameter is 12,012 Km and the equatorial rotation

is 243 days. Finally the mass of Venus is 4.87*10^24

(Cattermole, 63, 1993). Venus, although different than Earth, is

still our sister planet.

Mars is the fourth furthest away from the sun and is

recognized by its reddish color. Mars is also very much like the

Earth. ” More than any other planet in the solar system, Mars

has characteristics that make it an Earth-like world “(Grolier,

1992).

One thing that is very similar to Earth is the rotation

period. Mars rotation period is only thirty seven minutes longer

than the Earth’s. This would explain why Mars has significant

seasonal changes just as Earth does. It is believed that the

Planets 5

difference between winter and summer on Mars is even greater than

on Earth.

Mars is extremely hard to understand due to the effect of

blurring that is caused by the two atmospheres of Mars.

Scientists do know, however, that Mars is relatively small and

that changes take place in the surface features when the seasons

change. It is also known that dust storms are prevalent and

leaves the surface of Mars covered by a red haze.